Re: [PATCH v7, 03/15] media: mtk-vcodec: Refactor vcodec pm interface

[yunfei.dong@xxxxxxxxxxxx]

Hi Dafna,

Thanks for your suggestion.

On Thu, 2021-10-14 at 15:44 +0200, Dafna Hirschfeld wrote:
> 
> On 11.10.21 09:02, Yunfei Dong wrote:
> > Using the needed param for pm init/release function and remove
> > unused
> > param mtkdev in 'struct mtk_vcodec_pm'.
> > 
> 
> I see that there is a lot of code duplication between
> mtk_vcodec_release_dec_pm.c and mtk_vcodec_release_enc_pm.c
> I think if you bother to factor the decoder you should do the same
> factor to the encoder, but actually the much better thing to do
> is to unify all code duplication between these two files, just for
> example of identical functions:
> 
> mtk_vcodec_enc/dec_clock_on/off
> mtk_vcodec_release_enc_pm
> mtk_vcodec_init_dec_pm
> 
> In addition, the function mtk_vcodec_dec_pw_on can be remove since it
> only calls pm_runtime_resume_and_get.
> It would be much better to call pm_runtime_resume_and_get directly
> and not hide it in a different function
> 
I will fix it in next patch series. It's not very reasonable in this
patch  series.

> Thanks,
> Dafna
> 
Thanks,
Yunfei Dong
> > Reviewed-by: Tzung-Bi Shih <tzungbi@xxxxxxxxxx>
> > Signed-off-by: Yunfei Dong <yunfei.dong@xxxxxxxxxxxx>
> > ---
> >   .../platform/mtk-vcodec/mtk_vcodec_dec_drv.c  |  6 ++---
> >   .../platform/mtk-vcodec/mtk_vcodec_dec_pm.c   | 22 ++++++++----
> > -------
> >   .../platform/mtk-vcodec/mtk_vcodec_dec_pm.h   |  5 +++--
> >   .../platform/mtk-vcodec/mtk_vcodec_drv.h      |  1 -
> >   .../platform/mtk-vcodec/mtk_vcodec_enc_pm.c   |  1 -
> >   5 files changed, 15 insertions(+), 20 deletions(-)
> > 
> > diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c 
> > b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c
> > index 8db9cdc66043..dd749d41c75a 100644
> > --- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c
> > +++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c
> > @@ -249,7 +249,7 @@ static int mtk_vcodec_probe(struct
> > platform_device *pdev)
> >   	if (IS_ERR(dev->fw_handler))
> >   		return PTR_ERR(dev->fw_handler);
> >   
> > -	ret = mtk_vcodec_init_dec_pm(dev);
> > +	ret = mtk_vcodec_init_dec_pm(dev->plat_dev, &dev->pm);
> >   	if (ret < 0) {
> >   		dev_err(&pdev->dev, "Failed to get mt vcodec clock
> > source");
> >   		goto err_dec_pm;
> > @@ -379,7 +379,7 @@ static int mtk_vcodec_probe(struct
> > platform_device *pdev)
> >   err_dec_alloc:
> >   	v4l2_device_unregister(&dev->v4l2_dev);
> >   err_res:
> > -	mtk_vcodec_release_dec_pm(dev);
> > +	mtk_vcodec_release_dec_pm(&dev->pm);
> >   err_dec_pm:
> >   	mtk_vcodec_fw_release(dev->fw_handler);
> >   	return ret;
> > @@ -422,7 +422,7 @@ static int mtk_vcodec_dec_remove(struct
> > platform_device *pdev)
> >   		video_unregister_device(dev->vfd_dec);
> >   
> >   	v4l2_device_unregister(&dev->v4l2_dev);
> > -	mtk_vcodec_release_dec_pm(dev);
> > +	mtk_vcodec_release_dec_pm(&dev->pm);
> >   	mtk_vcodec_fw_release(dev->fw_handler);
> >   	return 0;
> >   }
> > diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.c
> > b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.c
> > index 6038db96f71c..20bd157a855c 100644
> > --- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.c
> > +++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.c
> > @@ -13,18 +13,15 @@
> >   #include "mtk_vcodec_dec_pm.h"
> >   #include "mtk_vcodec_util.h"
> >   
> > -int mtk_vcodec_init_dec_pm(struct mtk_vcodec_dev *mtkdev)
> > +int mtk_vcodec_init_dec_pm(struct platform_device *pdev,
> > +	struct mtk_vcodec_pm *pm)
> >   {
> >   	struct device_node *node;
> > -	struct platform_device *pdev;
> > -	struct mtk_vcodec_pm *pm;
> > +	struct platform_device *larb_pdev;
> >   	struct mtk_vcodec_clk *dec_clk;
> >   	struct mtk_vcodec_clk_info *clk_info;
> >   	int i = 0, ret = 0;
> >   
> > -	pdev = mtkdev->plat_dev;
> > -	pm = &mtkdev->pm;
> > -	pm->mtkdev = mtkdev;
> >   	dec_clk = &pm->vdec_clk;
> >   	node = of_parse_phandle(pdev->dev.of_node, "mediatek,larb", 0);
> >   	if (!node) {
> > @@ -32,13 +29,12 @@ int mtk_vcodec_init_dec_pm(struct
> > mtk_vcodec_dev *mtkdev)
> >   		return -1;
> >   	}
> >   
> > -	pdev = of_find_device_by_node(node);
> > +	larb_pdev = of_find_device_by_node(node);
> >   	of_node_put(node);
> > -	if (WARN_ON(!pdev)) {
> > +	if (WARN_ON(!larb_pdev)) {
> >   		return -1;
> >   	}
> > -	pm->larbvdec = &pdev->dev;
> > -	pdev = mtkdev->plat_dev;
> > +	pm->larbvdec = &larb_pdev->dev;
> >   	pm->dev = &pdev->dev;
> >   
> >   	dec_clk->clk_num =
> > @@ -82,10 +78,10 @@ int mtk_vcodec_init_dec_pm(struct
> > mtk_vcodec_dev *mtkdev)
> >   	return ret;
> >   }
> >   
> > -void mtk_vcodec_release_dec_pm(struct mtk_vcodec_dev *dev)
> > +void mtk_vcodec_release_dec_pm(struct mtk_vcodec_pm *pm)
> >   {
> > -	pm_runtime_disable(dev->pm.dev);
> > -	put_device(dev->pm.larbvdec);
> > +	pm_runtime_disable(pm->dev);
> > +	put_device(pm->larbvdec);
> >   }
> >   
> >   int mtk_vcodec_dec_pw_on(struct mtk_vcodec_pm *pm)
> > diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.h
> > b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.h
> > index 280aeaefdb65..a3df6aef6cb9 100644
> > --- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.h
> > +++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.h
> > @@ -9,8 +9,9 @@
> >   
> >   #include "mtk_vcodec_drv.h"
> >   
> > -int mtk_vcodec_init_dec_pm(struct mtk_vcodec_dev *dev);
> > -void mtk_vcodec_release_dec_pm(struct mtk_vcodec_dev *dev);
> > +int mtk_vcodec_init_dec_pm(struct platform_device *pdev,
> > +	struct mtk_vcodec_pm *pm);
> > +void mtk_vcodec_release_dec_pm(struct mtk_vcodec_pm *pm);
> >   
> >   int mtk_vcodec_dec_pw_on(struct mtk_vcodec_pm *pm);
> >   void mtk_vcodec_dec_pw_off(struct mtk_vcodec_pm *pm);
> > diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h
> > b/drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h
> > index 3b1e5e3a450e..973b0b3649c6 100644
> > --- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h
> > +++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h
> > @@ -195,7 +195,6 @@ struct mtk_vcodec_pm {
> >   	struct mtk_vcodec_clk	venc_clk;
> >   	struct device	*larbvenc;
> >   	struct device	*dev;
> > -	struct mtk_vcodec_dev	*mtkdev;
> >   };
> >   
> >   /**
> > diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_pm.c
> > b/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_pm.c
> > index 1b2e4930ed27..0c8c8f86788c 100644
> > --- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_pm.c
> > +++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_pm.c
> > @@ -26,7 +26,6 @@ int mtk_vcodec_init_enc_pm(struct mtk_vcodec_dev
> > *mtkdev)
> >   	pdev = mtkdev->plat_dev;
> >   	pm = &mtkdev->pm;
> >   	memset(pm, 0, sizeof(struct mtk_vcodec_pm));
> > -	pm->mtkdev = mtkdev;
> >   	pm->dev = &pdev->dev;
> >   	dev = &pdev->dev;
> >   	enc_clk = &pm->venc_clk;
> >